Stuffing box



Sept. 22, 1936.

A. c. ZIMMERMAN ET AL STUFFING BOX Filed Sept. 26, 1934 INVENTORS ARTHUR C.ZIMMERMAN, ELMER FISTEGER, ,B

A11n|2-cv Patented Sept. 22, 1936 UNITED STATES STUFFING BOX Arthur C. Zimmerman, and Elmer F. Steger,

Dayton, Ohio, assignors to The Duro Company, Dayton, Ohio, a corporation of Ohio Application September 26, 1934, Serial No. 745,614 4 Claims. 7 (01.286 27),

This invention relates to improvements in stuffing boxes, and has for its object to provide a stufling box in connection with pumps, that will prevent the drain-back of the water; that is, "will prevent the waterfrom the pump passing along the pump rod into the crankcase, which is usually filled with oil for lubrication and other purposes. a

It is an object of this invention to provide a stufiing box which is constructed as a unit and may be removed for repair and replacement.

These and other objects and advantages will appear from the following description taken in connection with the drawing.

Referring to the drawing:

Figure 1 is a vertical, longitudinal section through a part of a pump and its operating mechanism, showing the application of the present packing and stuffing box structure.

Figure 2 is a section on the line 2-2 of Figure 1.

While the packing or stufling box structure may be used for various purposes and in various relationships, in the present application it is shown used in connection with a pump and the operating mechanism for the pump.

The numeral l is used to designate a part of a crank-casing, in which the numeral 2 represents a pitman connected at one end to a head 3, and guided by means of a guide 4. This head and the supporting guide are cylindrical in shape, but any other suitable form may be used. The pump casing is attached to the crank-casing by means of a connection 6. This connection is attached to a wall l of the pump-casing.

In the pump-casing is a pump cylinder 3, which has therein a pump piston 9 adapted to be moved longitudinally within the pump cylinder by means of a pump rod It), suitably attached at one end to the piston. This rod is attached at its other end to one end of the head 3 so that whenever the head reciprocates the rod and the piston also reciprocate. The part of the pump-casing adjacent the crank-casing is provided with a hole ll, while a similar but smaller hole i2 is provided in the part 1 of the crankcasing. In the hole 12 is a wrought steel sleeve l3, through which the pump rod 50 extends.

One end of this sleeve is enlarged to accommodate washers and a wiper. There are two wrought steel washers l4 and ll, between which there is a leather wiper l5 in the form of a disc, which has in the center thereof an enlarged ring part It. This part 16 is surrounded by the outer washer ll, while the inner washer l4 fits closely around the pump rod Ill. The wrought steel washer I4 rests upon a shoulder Ma provided therefor in the sleeveQwhile the-other'washer H is substantially flush with the end of the sleeve. Any suitable means may be provided for holding the washers and the wiper assembled in the sleeve.

The hole M is closed by means of a disc l8 threaded therein. This disc has projecting therefrom, toward the crank-casing, an integral sleeve l9, which has therein adjacent the disc a ring 10 packing 26, which closely fits around the pump rod iii and is held in position by means of a gland 2!, the inner end of which is beveled at 22 to engage a correspondingly shaped part of the ring packing. The disc i8 is provided with a hole for the pump rod ll), and has around this hole a beveled part 23 opposite the beveled part 22 of the giand. These two beveled parts serve as cooperating seats for holding the ring packings in position around the pump rod.

The outer end of the gland 2! is outwardly flared and has an outwardly extending flange 24, and has adjacent the flange a plurality of holes 25 through which any water trapped about the pump rod and in the gland may escape. The 25 free end of the sleeve i9 is closed by means of a cap 26, which has a hole 27 therein for the pump rod IE1. This cap has a plurality of holes 28, corresponding to the holes 25, through which the water may pass. 30

Between the outer end of the gland and the inner surface of the cap 26 is a leather disc wiper 28, which has an inwardly projecting ring part 3|] within the flanged and flared end of the gland 2i The part of the connection 6 immediately below the cap 26 serves as a water box to catch the water that has dripped through the holes 25 and. 28. Between the disc l8 and the adjacent part of the pump-casing is a gasket 3| which prevents water passing between the disc and the pumpcasing.

With the foregoing features it is practically impossible for water to escape from the pump-casing and get into the crank-casing. Should any water pass the ring packing it will be drained through the various holes into the water box. Any remaining water on the pump rod would find difficulty in passing the leather disc 29 and the ring 35!. If any water should pass the leather disc 29 and the ring 30, the wiper l5 and the part i6 would serve to trap and divert this water so it would be impossible for water to escape from the pump-casing and get into the crank-casing- It will be understood that we desire to comprehend within our invention such modifications as come within the scope of the claims and the invention.

Having thus fully described the invention, what we claim as new and desire to secure by Letters Patent, is:

1. In a packing and wiping attachment in combination with a casing having a threaded hole therein, a disc member adapted to be threaded into said hole, said disc having a hole therein to receive a pump shaft, a sleeve integral with the disc around the hole, a packing in said sleeve around the hole, a gland member in the sleeve in engagement at one end with the packing, a flange on the other end of the gland member, a leather wiper against the flange having a ring part projecting into the gland member, and a cap threaded on the sleeve and pressing the wiper against the flange.

2. In a packing and wiping attachment in combination with a casing having a threaded hole therein, a disc member adapted to be threaded into said hole, said disc having a hole therein to receive a pump shaft, a sleeve integral with the disc around the hole, a packing in said sleeve i around the hole, a gland member in the sleeve in engagement at one end with the packing, a flange on the other end of the gland member, a leather wiper against the flange having a ring part projecting into the gland member, and a cap threaded on the sleeve and pressing the wiper against the flange, the parts engaging the packing being so shaped that they tend to force the packing against a shaft in the hole.

3. In a packing and wiping attachment, a disc having therein a pump rod hole and an integral sleeve around the hole on one side of the disc, a packing in the sleeve around the hole, a gland member in the sleeve engaging at one end the packing, a wiper on the other end of the gland member, said wiper having a ring part projecting into the gland, and a cap member threaded onto the sleeve and engaging the wiper.

4. In a packing and Wiping attachment, a disc having therein a pump rod hole and an integral sleeve around the hole on one side of the disc, a packing in the sleeve around the hole, a gland member in the sleeve engaging at one end the packing, a wiper on the other end of the gland member, said wiper having a ring part projecting into the gland, and a cap member threaded onto the sleeve and engaging the wiper, said cap and gland having holes for the escape of water collected between the packing and the wiper.

ARTHUR C. ZIMMERMAN. ELMER F. STEGER. 

